182 



GARDENING FOR THE SOUTH. 



reduced them to two fungicides, viz.: Bordeaux mixture 

 and ammoniacal carbonate of copper, and two insecti- 

 cides, viz.: Paris green for chewing insects and kerosene 

 emulsion for those insects which feed by sucking. In 

 the calendar given at the end of this chapter other formu- 

 lae are given which may be relied on, but, as has been 

 already said, the four mentioned above will be found suffi- 

 cient for nearly all cases. 



3. The lime solution and the sulphate of copper should 

 be passed through a fine strainer and the former (milk 



Fig. 75— Almost too late to spray. Cornell Exp. Sta. Bull. 142. 



of lime) must be cold before mixing with the copper solu- 

 tion, otherwise the blue color characteristic of the Bor- 

 deaux may not be secured. 



4. Unless the spraying is well performed the labor will 

 be lost. Be sure that all portions of the plant diseased 

 are reached with the preparation, because if a small sur- 

 face is omitted an active center of disease may continue 

 its growth, and in a short time the plant will be in a bad 

 plight. 



